#CalBMI.py
height,weight=eval(input())
bmi=weight/pow(height,2)
print("BMI数值为:{:.2f}".format(bmi))
who,nat="",""
if bmi<18.5:
    who,nat=("偏瘦"),("偏瘦")
elif 18.5<=bmi<24:
    who,nat=("正常"),("正常")
elif 24<=bmi<25:
    who,nat=("正常"),("偏胖")
elif 25<=bmi<28:
    who,nat=("偏胖"),("偏胖")
elif 28<=bmi<30:
    who,nat=("偏胖"),("肥胖")
else:
    who,nat=("肥胖"),("肥胖")
print("BMI指标为:国际'{0}',国内'{1}'".format(who,nat))